Wood-refuse destroyer



1,509,475 `C.. HARRISON 1923 2 Sheets-Sheet 1 Sept. 23 1924.

WOOD REFUSE DESTROYER Filed Nov. 14

C. HARRISON WOOD REFUSE DESTRCYER Filed Nov. 14. 1923 2 Sheets-Sheet 2.MUAH

Patented Sept. 23, 1924,

PATENT OFFICE.

CHARLES HARRISON, 0F VANCOUVER, BRITISH COLUMBIA, CANADA.

`woonanrusn DESTROYER.

Application led November 14, 1923. Serial No. 674,775.

To all 'whom tk may coacern:

Be it known that I, CHARLES HARRISON, citizen of the Dominion of Canada,residing at Vancouver, inthe Province of British Columbia, Canada, haveinvented -a certain new and useful Improvement in Wood- RefuseDestroyers, of which the following is a specification. Y

This invention relates to a refuse burner for saw mill waste, and theimprovements are directed to the combustion of this waste within aclosed chamber, under such conditions as will prevent the delivery ofblack smoke and partially consumed particles to the atmosphere.

The means by which these results are at tained is fully described in thefollowing specification, reference being made to the drawings by whichit is accompanied, in which:

Fig. 1 is a vertical longitudinal section through the burner and itsconnected parts.

Fig. 2 is a sectional plan of the same on the line 2-2 in Fig. 1.

Fig. 3 is a face view of the shaking refuse delivery c hute to theburner.

Fig. 4- is a cross section of that part of the flue ory passage from theburner to the smoke-stack in which is the spark quenching spray, beingon the line 3 3 in Fig. 1.

In these drawings 2 vrepresents a cylindrical burner chamber on asuitable foundation. The bottom of this chamber 2 Ais above thefoundation and has a central square surface 4 from the four sides ofwhich the floor slopes Lupward to the circle of the chamber wall at anangle of approximately thirty degrees. In the lower part of three ofthese slopes are the grates throughwhich the air for combustion isdelivered to the burner from arched apertures inthe outer wall of theburner and from the upper edge of the fourthside 7 a circular aperturedelivers the products .of` combustionl from thisA chamlber 2 into acylindrical combustion chamber 9.

The chamber 2 is of sheet metal, hooped with angle iron and lined withfire-brick and is roofed by crossed I-beams., the undersides of thelowerseries of which are encased in lire-brick with sheet metal channelsbetween the webs of the lower series The bottom of this chute 10 isformed of lengthwise spaced apart bars as a grizzly, and beneath thechute 10 is a fixed chute 14 designed to catch the sawdust and the likewhich falls through` the grizzly bars of the ychute 10,..

v llVith this construction, as the refuse is delivered from the conveyorinto the chute l10, that chute swings on its pivots against theresistance of the springs, which shakn ing movement facilitates thepassage of the sawdust through the bars. The lighter material thus fallsseparately into the burner and is dried and burnt by the flame as itfalls, while the heavier material is projected into approximately thecentre of the burner.

The cylindrical combustion chamber 9 is, like the chamber 2, constructedof sheet metal hooped at intervals and lined with fire-brick. At itsconnection of the burner proper its shell is secured to the shell of theburner 2, and its other end is supported on rollers 415 that will permitof endwis-e eX- pansion and contraction without distortion or unduestrain.

In the outer end of this combustion chamber 9 is gland-packed at 16 oneend of a metal water-jacketed spray passage 17, the

vother end of which is inserted and secured in the base of thesmoke-stack 21. A water fservice from any suitable source of supply kisdelivered at 18 to the lower part of this drawings show it as provided`with an air lacket23, ndraivllg @Supply .at the Outereiid and.delivering through 2L ,duct 24 to ap' @Nuits-2.5' in the'wvyallfof the.burner 2 approximate the combus tion l zone of the refuse 'ni't.`"" f@Concrete is .generally used throughout .the '.coiistruction 'oztfthisburner, except Y v .Whereeigposed ,to heat that'lvvill beliable toinjure it. Further, the. furnace and combastion. chambersfarecylindrical and are lsheathed With metal, ,which sheathing is reinforcedWit-hiron hoops Where exposed ;;v to Agiaeatest stress." lThe expansionand. .con-

tractionofhall 'partsexposed`tov heat are .prepa-ru provided'for.

'@Twhefgrate barsfbeingwdisposedat an angle vvill'keep `free oi-ashaccumulation, and being` erposeddirectly to the incoming air currentsderive .the advantage of that current. The water-'jaclreted Vwashingpassage isso designed'that the Washing may be'e'ffected Without injurytothe structure.

Having now particularly described my invention, l vhereby declare that`-what I 4claim,.aSQneW ,and desire to be protected in by.,Lette,rsPatent, is ,i

wl. A `refuse burner comprising in combination a cylindricalchamberhaving a closedtop and gratesvin the bottom, means [fordeliveriiigfair for' combustion to the gratesfmeans for delivering thematerial to burned into the upper part of the chamber, "a cylindricalduct delivering the products of combustion from the lower part ofthe'chamber tothe smoke stack, said duct having a lengthlthe bottom of'vvhich drains to an outlet intermediate its ends, and means fordelivering a spray of Water across the ,alil @f ,sid lengthof the duct.2'. A'refuse burner, comprising in combination, {a' cylindricalchamber'having a ,cilScdtop Vand,grat/es in theibottom, meansfor'.'deliveringfair for" combustion to the Igrates, lmeansgfordelivering the material ',to'fbe.- burnt intothe upper part of thechamber, a lcylindrical duct'ldelivering the productsotcombustionffrom'the lov'vervpart of the chamber tol the smoke-stack,said duct ,having :a length Avvhich 'is ot metal andl-vg/{aterfjackcated, the bottom o fvvliich Water- ,jacketed f drains toan outlet intermediate the ends, and means for delivering a spray ofWater across the area of this metal portion of the duct.

3. A refuse burner, comprising in com-` bination, a cylindrical chamberhaving a closed top and la bottom sloping lupward from each side of asquare central area, grates in three of the four sloping sides or' thebottom, means for delivering air for combustion directly to thesegrates, means for delivering the material to be burnt into the upperpart of the chamber, means for delivering the products of combustionfrom the lower part of the chamber on the side which has vno bottomgrate, a horizontally disposed cylindrical combustion chamber throughwhich the products of combustion from the burner chamber pass yto the.smokestack, said combustion chamber secured to 'the burner chamber andhaving provision permitting endwise expansion therefrom, and means fordelivering a spra of .Water across the crosssection area o thecombustion chamber adjacent its Adelivery to the smoke-stack. i

LA refuse burner, comprising in combination, a cylindrical chamberhaving a closed top and a`bottorn sloping u `Ward from the four sides ofa square centra area, glatesin the sloping sides, means `for -deliveringair for combustion directly to'these grates, means for delivering thematerial to be burnt into the upper `end of the cylindrical chamber,means for separatin the smaller :from the lar er material during suchdelivery, means a jacent the lower, part of the chamber for deliveringthe furnace vgases therefrom, a horizontally disped. cylindricalcombustion chamber into which the furnace gases are delivered, saidcombustion chamber secured to theJ burner chamber, means `for supportingythe other end of the combustion chamber and providing for endvviseexpansion from the burner chamber, a water-jacketed passage connectingthe outer end of the,l combustion chamber to the smoke-stack, andmeansin thisy jacket for delivering a spray of Water across its area.

5. A refuse burner, comprising in comhina-tion, a cylindricalchamber'having a closed top and a grate in the bottom, means fordelivering air for combustion tothe gratas, means for delivering theroducts of combustion from tlie'lowerparlof the Ychamber to thesmoke-stack, means for de livering'the material to be burnt into theupper part of the chamber, meansr durinl delivering 'for separating thesmall materiy fi'rom the larger and for projecting "the larger towardthe smoke-stack delivery and the smaller vadiacent the opposite side ofthe burner.

"6, A refuse burner, comprising in combination, a cylindrical chamberhaving a Closed top and grates in the bottom, means for delivering airfor combustion to the grates, means for delivering the material to beburnt into the upper part of the oham ber, a horizontally disposedcylindrical duet delivering the products of combustion from the lowerpart of the chamber to the smokestack, a casing around this ductmaintaining an air space through which space air is conducted andpreheated for delivery to the furnace chamber.

In testimony whereof I affix my signature.

CHARLES HARRISON.

